String sanitized = "";
try {
String contentType = response.getHeader("Content-Type");
if (contentType == null || contentType.toLowerCase().startsWith("text/")) {
String proxyBaseNoGadget = rewriterUris.getProxyBase(request.getContainer());
SanitizingProxyingLinkRewriter cssImportRewriter = new SanitizingProxyingLinkRewriter(
request.getGadget(), rewriterFeature, proxyBaseNoGadget, "text/css");
SanitizingProxyingLinkRewriter cssImageRewriter = new SanitizingProxyingLinkRewriter(
request.getGadget(), rewriterFeature, proxyBaseNoGadget, "image/*");
sanitized = cssSanitizer.sanitize(content.getContent(), request.getUri(), cssImportRewriter,
cssImageRewriter);
}